已知3x+2y除以2=2y+z除以3=3z+x除以7,求(x+y+z):(3x+2y)的值

已知x除以2=y除以3=z除以4,且x≠0,求x+y+z除以x-2y+3z的值, 已知2x+3y-4z=0,3x+4y+5z=0,求x+y+z/（除以）x-y+z的值. 已知x+2y-3z=0,2x+3y+5z=0,求(x+y+z)除以（x-y+z) 已知2x+3y-4z=0,3x+4y-5z=0.求x+y+z除以x-y+z, 已知X Y Z满足3x-2y+z的绝对值+2x+y+2z的绝对值=0（x,y,z不等于0）,求x+y除以Z的值 已知x+2y-3x=0,2x+3y+5z=o.求x+y+z除以x-y+z 已知3x=2y=5z不等于0.求(x+2y+3z)除以(x-y+z)的值. 已知x+4y=6z,且3x-4y+2z=0,求2x+3y除以z的值 xy除以x+y等于2,xz除以x+z等于3,yz除以y+z等于4,求x,y,z 的值 x除以2=y除以3=z除以5 2x+y+3z=88 求x = y = z= 已知x除以2=y除以3=z除以-7≠0 已知X+4Y+3Z=3X-2Y-5Z=0,求X+2Y-Z除以2X-3Y+7Z的值